x = int(input())

if x <= 599:
  print(8,"\n")
elif x <= 799:
  print(7,"\n")
elif x <= 999:
  print(6,"\n")
elif x <= 1199:
  print(5,"\n")
elif x <= 1399:
  print(4,"\n")
elif x <= 1599:
  print(3,"\n")
elif x <= 1799:
  print(2,"\n")
elif x <= 1999:
  print(1,"\n") x = int(input()) x int(input()) int input() input if x <= 599:
  print(8,"\n")
elif x <= 799:
  print(7,"\n")
elif x <= 999:
  print(6,"\n")
elif x <= 1199:
  print(5,"\n")
elif x <= 1399:
  print(4,"\n")
elif x <= 1599:
  print(3,"\n")
elif x <= 1799:
  print(2,"\n")
elif x <= 1999:
  print(1,"\n") x <= 599 x 599 print(8,"\n") print 8 "\n" elif x <= 799:
  print(7,"\n") x <= 799 x 799 print(7,"\n") print 7 "\n" elif x <= 999:
  print(6,"\n") x <= 999 x 999 print(6,"\n") print 6 "\n" elif x <= 1199:
  print(5,"\n") x <= 1199 x 1199 print(5,"\n") print 5 "\n" elif x <= 1399:
  print(4,"\n") x <= 1399 x 1399 print(4,"\n") print 4 "\n" elif x <= 1599:
  print(3,"\n") x <= 1599 x 1599 print(3,"\n") print 3 "\n" elif x <= 1799:
  print(2,"\n") x <= 1799 x 1799 print(2,"\n") print 2 "\n" elif x <= 1999:
  print(1,"\n") x <= 1999 x 1999 print(1,"\n") print 1 "\n" x = int(input()) int(input()) x
x = int(input())

if x <= 599:
  print(8,"\n")
elif x <= 799:
  print(7,"\n")
elif x <= 999:
  print(6,"\n")
elif x <= 1199:
  print(5,"\n")
elif x <= 1399:
  print(4,"\n")
elif x <= 1599:
  print(3,"\n")
elif x <= 1799:
  print(2,"\n")
elif x <= 1999:
  print(1,"\n")